Pulverizing-and-sifting Operator
Overall rating: (N/A)
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Tends mechanical equipment, such as jaw crusher,
disintegrator, ball mill, swnig hammer mill, agitator sifter,
and silk screen shakers that pulverize and sift ingredients of
propellent and priming powders preparatory to blending: Feeds
raw material into machine or hopper, using hands or scoop.
Adjusts machines to reduce material to granules of desired size
by tunring screw, using spanner wrench, to adjust space between
reciprocating crusher jaws, or turning rheostat to regulate
vibrator speed controlling rate of flow into disintegrator, or
changing number of balls or hammers in mills, depending on type
of machine used. Tends agitator-sifter to sift pulverized
ingredients to obtain granules within specified grain size in
desired proportions. Sends sample to laboratory and computes
quantity of individual grain size to be added or screened out to
bring blend to acceptable proportions.
Changes screens, using
wrench, to produce desired size granules. Pours sifted material
into drum and rolls drum on floor to blend material. Tends
shaker machine to sift pulverized glass through silk screen for
blending in priming mixture. May hand blend priming compounds.
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Pulverizing-And-Sifting Operator
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